/Engine/Plugins/Runtime/GameplayAbilities/Source/GameplayAbilities/Public/AbilitySystemBlueprintLibrary.h
Adds NewGameplayTag to this instance of the effect
[UFUNCTION](Programming/UnrealArchitecture/Reference/Functions)(BlueprintCallable, Category="Ability|GameplayEffect") static [FGameplayEffectSpecHandle](API\Plugins\GameplayAbilities\FGameplayEffectSpecHandle) AddAssetTag ( [FGameplayEffectSpecHandle](API\Plugins\GameplayAbilities\FGameplayEffectSpecHandle) SpecHandle, [FGameplayTag](API\Runtime\GameplayTags\FGameplayTag) NewGameplayTag )